70 citations · 554 across the 16 of their papers we have counts for
16 papers
Hydrodynamic stabilization of self-organized criticality in a driven Rydberg gas
K. Klocke, T. M. Wintermantel, G. Lochead +2
Signatures of self-organized criticality (SOC) have recently been observed in an ultracold atomic gas under continuous laser excitation to strongly-interacting Rydberg states [S. H…
Epidemic growth and Griffiths effects on an emergent network of excited atoms
T. M. Wintermantel, M. Buchhold, S. Shevate +5
Whether it be physical, biological or social processes, complex systems exhibit dynamics that are exceedingly difficult to understand or predict from underlying principles. Here we…
Preparation of hundreds of microscopic atomic ensembles in optical tweezer arrays
Y. Wang, S. Shevate, T. M. Wintermantel +3
We present programmable two-dimensional arrays of microscopic atomic ensembles consisting of more than 400 sites with nearly uniform filling and small atom number fluctuations. Our…
Unitary and non-unitary quantum cellular automata with Rydberg arrays
T. M. Wintermantel, Y. Wang, G. Lochead +3
We propose a physical realization of quantum cellular automata (QCA) using arrays of ultracold atoms excited to Rydberg states. The key ingredient is the use of programmable multif…
Realization of a Rydberg-dressed Ramsey interferometer and electrometer
A. Arias, G. Lochead, T. M. Wintermantel +2
We present the experimental realization and characterization of a Ramsey interferometer based on optically trapped ultracold potassium atoms, where one state is continuously couple…
Characterizing the local vectorial electric field near an atom chip using Rydberg state spectroscopy
N. Cisternas, Julius de Hond, G. Lochead +3
We use the sensitive response to electric fields of Rydberg atoms to characterize all three vector components of the local electric field close to an atom-chip surface. We measured…
A medium-finesse optical cavity for the stabilization of Rydberg lasers
Julius de Hond, Nataly Cisternas, Graham Lochead +1
We describe the design, construction, and characterization of a medium-finesse Fabry-Pérot cavity for simultaneous frequency stabilization of two lasers operating at 960 and 780 nm…
A versatile, high-power 460nm laser system for Rydberg excitation of ultracold potassium
Alda Arias, Stephan Helmrich, Christoph Schweiger +3
We present a versatile laser system which provides more than 1.5W of narrowband light, tunable in the range from 455-463 nm. It consists of a commercial Titanium-Sapphire laser whi…
Controlling Rydberg atom excitations in dense background gases
Tara Cubel Liebisch, Michael Schlagmüller, Felix Engel +13
We discuss the density shift and broadening of Rydberg spectra measured in cold, dense atom clouds in the context of Rydberg atom spectroscopy done at room temperature, dating back…
Radiation trapping in a dense cold Rydberg gas
D. P. Sadler, E. M. Bridge, D. Boddy +5
Cold atomic gases resonantly excited to Rydberg states can exhibit strong optical nonlinearity at the single photon level. We observe that in such samples radiation trapping leads…
Probing a scattering resonance in Rydberg molecules with a Bose-Einstein condensate
Michael Schlagmüller, Tara Cubel Liebisch, Huan Nguyen +10
We present spectroscopy of a single Rydberg atom excited within a Bose-Einstein condensate. We not only observe the density shift as discovered by Amaldi and Segre in 1934, but a l…
Probing a quantum gas with single Rydberg atoms
Huan Nguyen, Tara Cubel Liebisch, Michael Schlagmüller +5
We present a novel spectroscopic method for probing the \insitu~density of quantum gases. We exploit the density-dependent energy shift of highly excited {Rydberg} states, which is…
Number-resolved imaging of excited-state atoms using a scanning autoionization microscope
G. Lochead, D. Boddy, D. P. Sadler +2
We report on a scanning microscopy technique for atom-number-resolved imaging of excited-state atoms. A tightly focused laser beam leads to local autoionization, and the resulting…
Spectroscopy of a cold strontium Rydberg gas
J. Millen, G. Lochead, G. R. Corbett +2
We present a study of a cold strontium Rydberg gas. The narrowband laser excitation of Rydberg states in the range n=20-80 from a 6~mK cloud of strontium atoms is detected using th…
Two-electron excitation of an interacting cold Rydberg gas
J. Millen, G. Lochead, M. P. A. Jones
We report the creation of an interacting cold Rydberg gas of strontium atoms. We show that the excitation spectrum of the inner valence electron is sensitive to the interactions in…
Modulation-free pump-probe spectroscopy of strontium atoms
C. Javaux, I. G. Hughes, G. Lochead +2
We have performed polarization spectroscopy and sub-Doppler DAVLL on the (5s5s) 1^S_0 -> (5s5p) 1^P_1 transition of atomic strontium. Both techniques generated a dispersion-type li…